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Re: Wishlish: GCC option for explicit booleans
- From: Andrew Pinski <pinskia at physics dot uc dot edu>
- To: pl at nch dot com dot au
- Cc: gcc at gcc dot gnu dot org
- Date: Sat, 1 Oct 2005 23:07:12 -0400 (EDT)
- Subject: Re: Wishlish: GCC option for explicit booleans
>
> C++ would be a better language if the boolean type did not implicitly
> convert from int. For example, many novice programmers make the
> mistake.
>
> if (i = j) dosomething(); // Should be i == j
>
> If conversion to boolean required explicit this would all be solved. It
> would mean all the old code with expressions like "while (p) ... "
> would need to be changed to "while (p != NULL) ...". But I think the
> change would be well justified.
>
> What about a GCC option to turn off implicit conversion to boolean?
GCC has an option to turn this into a warning at least for the "i = j" case.
But any thing else would just be a violation of the C and C++ standards.
If you want a feature like this, it would be better if you get the C and
C++ standards to change (which I really doubt they will).
-- Pinski